4-176192792-G-C

Variant names:

• chr4-176192792-G-C
• rs553655404
• NM_144644.4:c.523C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_144644.4(SPATA4):​c.523C>G​(p.Arg175Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,614,044 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R175C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SPATA4 NM_144644.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.321
• Publications: 0 publications found

Genes affected

SPATA4 (HGNC:17333): (spermatogenesis associated 4) Predicted to enable microtubule binding activity. Predicted to be involved in regulation of cytoskeleton organization. Predicted to be located in cytoplasm. Predicted to be active in axoneme. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08893925).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144644.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPATA4	NM_144644.4	MANE Select	c.523C>G	p.Arg175Gly	missense	Exon 4 of 6	NP_653245.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPATA4	ENST00000280191.7	TSL:1 MANE Select	c.523C>G	p.Arg175Gly	missense	Exon 4 of 6	ENSP00000280191.2	Q8NEY3
	SPATA4	ENST00000515234.1	TSL:1	c.4C>G	p.Arg2Gly	missense	Exon 3 of 5	ENSP00000422290.1	G5E9Y6
	SPATA4	ENST00000508699.1	TSL:3	n.*352C>G		downstream_gene	N/A	ENSP00000425950.1	H0YA30

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152158 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251322 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461768 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 727184

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53404

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111944

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152276 Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1 AN XY: 74466

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41554

American (AMR) AF: 0.00 AC: 0 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68008

Other (OTH) AF: 0.00 AC: 0 AN: 2110

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	13
DANN	Benign	0.96
DEOGEN2	Benign	0.073	T
Eigen	Benign	-0.79
Eigen_PC	Benign	-0.80
FATHMM_MKL	Benign	0.047	N
LIST_S2	Benign	0.66	T
M_CAP	Benign	0.0085	T
MetaRNN	Benign	0.089	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.2	L
PhyloP100		0.32
PrimateAI	Benign	0.20	T
PROVEAN	Uncertain	-2.9	D
REVEL	Benign	0.085
Sift	Benign	0.13	T
Sift4G	Benign	0.075	T
Polyphen		0.044	B
Vest4		0.21
MutPred		0.60		Loss of helix (P = 0.028)
MVP		0.27
MPC		0.17
ClinPred		0.25	T
GERP RS		0.11
Varity_R		0.18
gMVP		0.27
Mutation Taster		=75/25	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs553655404; hg19: chr4-177113943;